Of-paris



we. uumrusmuus,

COATING 0R PLASTIC.

ailross Re tasmittenaii i atassnmom, ASSIGL QR a ,Ae' UEs DE mm;

.OF TAENIKON NEAR AADORF, SWITZERLAND.

v (I I U) CEMENT FOR GWING A CHEAPAND DURABLE METAL COATING T0PAPIER-MACH, PLASTER- OF-PARIS, CLAY, 6L6.

SPECIFICATION forming part of Letters Patent N 0. 300,890, dated June24, 1884. L

' 'Application filed March 12, 1884. (No specimens.)

partsof the above solution, or five parts of chrou t-e of a um and water(l. 5)total, one

an re i r s. A fter the object thus treated has been dried for some daysin warm air or in the sun it will be found that this layer or metallicsurface will become so hard and firm that it will not be injured byexposure to the heat of the sun or to frost or moisturebeing, in fact,weather-proof.

Heretofore, so far as I am aware, permanent metal surfaces have beenimparted to many articles-such as stone, tiles, terracotta, andearthenwareby burning them in or by other costly processes; but by mymode To all whom it may concern Be it known that I, FERDINAND PBILIPP,ii of Romanshorn, in the Canton of Thurgau and Republic of Switzerland,have invented 5 certain new and useful Improvements in Liquid Cement forGiving a Cheap and Durable Metal Coating to PapierMach, Plaster-of-Pa'ris, Clay, Slate, Hardened Cement, Metal, &c.-as, for instance,toroof slates, tiles, &c. by which the roof receives a metallicappearance and becomes water-proof; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which other.

hol s irit o 25 parts. a The iqui it appertains to make and use thesame.

My new composition is prepared by two combined processes which completeone an- The first consists of the following ingredients, which are mixedin substantially the following proportions, viz: No. 1, sixty partspowdered colophony; fifteen parts alchgu lic s'rit, ten

parts tur entine, ten par eenm s1r1t five parts silicate of soda- 0 aone 1 un re us prepared is then spread upon the object to be treatedafter the manner of applying a sizing, and is applicable to of treatmentI avoid all this labor, expense, and delay, and also any detriment to ordestruction of the metallic colors, as the heat required to impart themis not of an intense character.

Porous and water-absorbing materials are rendered impervious by coatingwith my improved liquid-cement recipe No. 1, and it is thereforeespecially desirable for damp walls, roofs, roofing, and for cornices,&c.

To be more explicit, the entire metallizing methods herein described maybe said to conslst, first, of a coating of the composition first hereinabove described laid on the object to be treated; then in the spreadingof a metal dust upon it (when it is desired to give a meta-lllc finishto imitate metal) before the liquld is quite dry; and, lastly, in thelaying on of my composition or varnish above described and designated asNo. 2, for the protection of the color-of the metal dust applied, asabove set forth, to the surface of the object.

What I claim, and desire to secure by Letters Patent, is o 8 5 1. Theherein-described compound for treatmg materials to render them firm andwaterproof, consisting of colophony, alcohol, (spirit of wine orpyroxylic spirit,) turpentine, petroleum spirit, and silicate of soda,in the proportions substantially as set forth,

2. The herein-described compound for protecting the metallic color ofbodies surfaced v ith metallic dust, consisting of bicromate of ,890 Ipapier-mach, plasterof -paris, clay, slate, 75 cement, metals, &c., andrenders them more firm and water-proof. When it is desired to give ametallic finish in imitation of metal to the object treated with theabove composition, I apply to its surface, before the composition hashardened, a dust of any desired metal-e.y.,silver orco er &c.- ymeans ofa fine camel s-hair brusE,':Hter which the metalized object is dried inwarm air or in the sun. In order that not only the metal dust mayadhere, but that also the metallic color 0 may be retained and notoxidize on exposure to the air, the second composition or varnish islaid quite lightly on themetallized surface after the lapse of a fewdays. To prepare this composition N012, I dissolve, first of all, one Ipart of bichr'omate of potash in five parts of ter,'andm1x en, say, eigty parts of disa t -r.;fifteennarts of n In T n or vvarnish composed ofthe materials designatedaboveas No. 2. I

potash, distilled water, and Russian glue,i

main). rHiLrPr.

the proportions substantiallyas set forth.

3. The described method of metallizing the surface of bodies, consistingin first coating 5' with the composition designated aboveasNo.

- 1; then spreading metal dust upon it before a g sthe liquid is quitedry; and, lastly, laying up- CARL MULLER, l j. g

" such metal-dusted Surface, e light coating. no

witnessesz Y ERNEST TREI,

